Infrared and Raman spectra of a sulfur-resistant methanation catalyst

Journal Article · Thu May 01 04:00:00 EDT 1980 · Appl. Spectrosc.; (United States)

DOI:https://doi.org/10.1366/0003702804730330· OSTI ID:5279956

Stencel, J M; Bradley, E B; Brown, F R

The infrared and Raman spectra of a sulfur-resistant NiO/Cr/sub 2/O/sub 3//MgSiO/sub 3/ methanation catalyst are presented and compared to the spectra of the catalyst after being reduced, sulfided, and tested for methanation activity. The molecular structure of the catalyst is shown to be represented by NiO and MgO dispersed in a quasi-tridimensional Cr-O-Si network. Reduction and sulfiding reorders this network and alters the SiO/sub n/ coordination while reducing Cr/sup 6 +/ to Cr/sup 3 +/ or Cr/sup 2 +/. The data indicate that the SO/sub 4//sup -2/ which is present after sulfiding and methanation testing may have been formed during the methanation reaction.

• Research Organization: Department of Electrical Engineering, University of Kentucky, Lexington, Kentucky 40506
• OSTI ID: 5279956
• Journal Information: Appl. Spectrosc.; (United States), Journal Name: Appl. Spectrosc.; (United States) Vol. 34:3; ISSN APSPA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
INFRARED SPECTRA
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METHANATION
NICKEL COMPOUNDS
NICKEL OXIDES
OXIDES
OXYGEN COMPOUNDS
RAMAN SPECTRA
REDUCTION
SILICON COMPOUNDS
SILICON OXIDES
SPECTRA
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS